./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:31:46,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:31:47,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:31:47,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:31:47,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:31:47,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:31:47,105 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:31:47,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:31:47,106 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:31:47,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:31:47,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:31:47,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:31:47,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:31:47,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:31:47,109 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:31:47,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:31:47,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:31:47,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:31:47,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:31:47,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:31:47,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:31:47,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:31:47,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:31:47,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:31:47,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:31:47,114 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:31:47,114 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:31:47,115 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:31:47,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:31:47,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:31:47,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:31:47,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:31:47,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:31:47,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:31:47,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:31:47,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:31:47,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:31:47,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:31:47,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:31:47,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:31:47,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:31:47,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:31:47,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:31:47,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:31:47,123 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-08 16:31:47,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:31:47,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:31:47,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:31:47,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:31:47,432 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:31:47,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c Unable to find full path for "g++" [2024-11-08 16:31:49,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:31:49,717 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:31:49,717 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-08 16:31:49,727 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/data/6ed8a924e/2d9c2e6b50e74cc5bb53c4dcfae98ec3/FLAG7cc9ab4b3 [2024-11-08 16:31:49,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/data/6ed8a924e/2d9c2e6b50e74cc5bb53c4dcfae98ec3 [2024-11-08 16:31:49,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:31:49,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:31:49,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:31:49,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:31:49,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:31:49,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:31:49" (1/1) ... [2024-11-08 16:31:49,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684aea31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:49, skipping insertion in model container [2024-11-08 16:31:49,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:31:49" (1/1) ... [2024-11-08 16:31:49,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:31:50,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:31:50,127 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:31:50,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:31:50,184 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:31:50,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50 WrapperNode [2024-11-08 16:31:50,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:31:50,186 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:31:50,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:31:50,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:31:50,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,246 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 338 [2024-11-08 16:31:50,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:31:50,251 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:31:50,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:31:50,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:31:50,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,278 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,296 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-08 16:31:50,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:31:50,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:31:50,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:31:50,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:31:50,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (1/1) ... [2024-11-08 16:31:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:31:50,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:31:50,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:31:50,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:31:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:31:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:31:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:31:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:31:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:31:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 16:31:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 16:31:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 16:31:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 16:31:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 16:31:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 16:31:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-08 16:31:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-08 16:31:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:31:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:31:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:31:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:31:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 16:31:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:31:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:31:50,427 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:31:50,556 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:31:50,558 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:31:51,140 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:31:51,141 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:31:51,936 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:31:51,936 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:31:51,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:31:51 BoogieIcfgContainer [2024-11-08 16:31:51,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:31:51,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:31:51,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:31:51,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:31:51,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:31:49" (1/3) ... [2024-11-08 16:31:51,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360853d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:31:51, skipping insertion in model container [2024-11-08 16:31:51,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:31:50" (2/3) ... [2024-11-08 16:31:51,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360853d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:31:51, skipping insertion in model container [2024-11-08 16:31:51,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:31:51" (3/3) ... [2024-11-08 16:31:51,951 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-08 16:31:51,971 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:31:51,971 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-11-08 16:31:51,971 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:31:52,143 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 16:31:52,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 228 flow [2024-11-08 16:31:52,274 INFO L124 PetriNetUnfolderBase]: 12/96 cut-off events. [2024-11-08 16:31:52,274 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-08 16:31:52,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 96 events. 12/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 331 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-11-08 16:31:52,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 228 flow [2024-11-08 16:31:52,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 94 transitions, 209 flow [2024-11-08 16:31:52,300 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:31:52,308 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14cf64b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:31:52,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-11-08 16:31:52,315 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:31:52,315 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-11-08 16:31:52,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:31:52,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:31:52,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 16:31:52,317 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 16:31:52,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:52,322 INFO L85 PathProgramCache]: Analyzing trace with hash 33472918, now seen corresponding path program 1 times [2024-11-08 16:31:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:52,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603077530] [2024-11-08 16:31:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:52,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:31:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:31:52,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:31:52,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603077530] [2024-11-08 16:31:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603077530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:31:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:31:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:31:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577508010] [2024-11-08 16:31:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:31:52,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:31:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:31:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:31:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:31:52,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 16:31:52,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:52,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:31:52,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 16:31:52,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:32:04,201 INFO L124 PetriNetUnfolderBase]: 52072/73050 cut-off events. [2024-11-08 16:32:04,201 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-11-08 16:32:04,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137331 conditions, 73050 events. 52072/73050 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 7439. Compared 591692 event pairs, 36482 based on Foata normal form. 2/29094 useless extension candidates. Maximal degree in co-relation 130761. Up to 62098 conditions per place. [2024-11-08 16:32:04,934 INFO L140 encePairwiseOnDemand]: 86/100 looper letters, 44 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2024-11-08 16:32:04,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 293 flow [2024-11-08 16:32:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:32:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:32:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 218 transitions. [2024-11-08 16:32:04,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.545 [2024-11-08 16:32:04,952 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 209 flow. Second operand 4 states and 218 transitions. [2024-11-08 16:32:04,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 293 flow [2024-11-08 16:32:05,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 280 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-08 16:32:05,058 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 192 flow [2024-11-08 16:32:05,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2024-11-08 16:32:05,066 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -12 predicate places. [2024-11-08 16:32:05,067 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 192 flow [2024-11-08 16:32:05,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:05,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:32:05,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-08 16:32:05,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:32:05,069 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 16:32:05,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:32:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1037661549, now seen corresponding path program 1 times [2024-11-08 16:32:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:32:05,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931928975] [2024-11-08 16:32:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:32:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:32:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:32:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:05,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931928975] [2024-11-08 16:32:05,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931928975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:32:05,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:32:05,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:32:05,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379675129] [2024-11-08 16:32:05,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:32:05,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:32:05,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:32:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:32:05,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:32:05,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 16:32:05,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:05,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:32:05,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 16:32:05,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:32:14,458 INFO L124 PetriNetUnfolderBase]: 52076/73064 cut-off events. [2024-11-08 16:32:14,459 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-08 16:32:14,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136558 conditions, 73064 events. 52076/73064 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 7463. Compared 592044 event pairs, 36482 based on Foata normal form. 2/29108 useless extension candidates. Maximal degree in co-relation 136498. Up to 62107 conditions per place. [2024-11-08 16:32:15,178 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 49 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-11-08 16:32:15,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 92 transitions, 326 flow [2024-11-08 16:32:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:32:15,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:32:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 218 transitions. [2024-11-08 16:32:15,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.545 [2024-11-08 16:32:15,186 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 192 flow. Second operand 4 states and 218 transitions. [2024-11-08 16:32:15,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 92 transitions, 326 flow [2024-11-08 16:32:15,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:32:15,192 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 236 flow [2024-11-08 16:32:15,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-11-08 16:32:15,194 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, -9 predicate places. [2024-11-08 16:32:15,194 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 236 flow [2024-11-08 16:32:15,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:15,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:32:15,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-08 16:32:15,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:32:15,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 16:32:15,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:32:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash 572170139, now seen corresponding path program 1 times [2024-11-08 16:32:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:32:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143172876] [2024-11-08 16:32:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:32:15,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:32:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:32:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143172876] [2024-11-08 16:32:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143172876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:32:15,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336390380] [2024-11-08 16:32:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:32:15,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:32:15,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:32:15,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:32:15,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:32:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:15,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:32:15,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:32:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:32:15,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:32:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:32:15,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336390380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:32:15,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:32:15,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 16:32:15,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76945069] [2024-11-08 16:32:15,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:32:15,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:32:15,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:32:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:32:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:32:15,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 100 [2024-11-08 16:32:15,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 236 flow. Second operand has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:15,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:32:15,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 100 [2024-11-08 16:32:15,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:32:25,803 INFO L124 PetriNetUnfolderBase]: 52088/73106 cut-off events. [2024-11-08 16:32:25,804 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-11-08 16:32:26,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136652 conditions, 73106 events. 52088/73106 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 7463. Compared 593117 event pairs, 36482 based on Foata normal form. 0/29140 useless extension candidates. Maximal degree in co-relation 136515. Up to 62110 conditions per place. [2024-11-08 16:32:26,323 INFO L140 encePairwiseOnDemand]: 91/100 looper letters, 49 selfloop transitions, 25 changer transitions 0/110 dead transitions. [2024-11-08 16:32:26,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 462 flow [2024-11-08 16:32:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:32:26,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-08 16:32:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 480 transitions. [2024-11-08 16:32:26,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-08 16:32:26,329 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 236 flow. Second operand 10 states and 480 transitions. [2024-11-08 16:32:26,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 462 flow [2024-11-08 16:32:26,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:32:26,334 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 398 flow [2024-11-08 16:32:26,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=398, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2024-11-08 16:32:26,337 INFO L277 CegarLoopForPetriNet]: 95 programPoint places, 3 predicate places. [2024-11-08 16:32:26,337 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 398 flow [2024-11-08 16:32:26,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:26,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:32:26,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:32:26,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:32:26,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42ba29d4-afe0-420b-bee1-15edcc14caed/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 16:32:26,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-11-08 16:32:26,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:32:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash 601437845, now seen corresponding path program 1 times [2024-11-08 16:32:26,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:32:26,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753237216] [2024-11-08 16:32:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:32:26,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:32:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:32:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:26,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753237216] [2024-11-08 16:32:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753237216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:32:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:32:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:32:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318663047] [2024-11-08 16:32:26,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:32:26,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:32:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:32:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:32:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:32:26,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2024-11-08 16:32:26,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:32:26,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:32:26,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2024-11-08 16:32:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand